Cylindrical hollow-tile structure and blocks therefor.



H. B NAYLOR. CY-LINDRICAL HOLLOW TILE STRUCTURE AND BLOCKSTHEREFOR.

APPLICATION FILED NOV. 15. I912.

Pat ented July 13, 1915.

2 SHEETS-SHEET I.

INVENTOB (3.

4 H. B. NAYLOR. CYLINDRICAL HOLLOW TILE STRUCTURE AND BLOCKS THEREFOR.

' APPLICATION FILED NOV. 15. I912.

. Patented J111y.13, 1915.

2 SHEETS-SHEET 2.

INVENTOR. N X\ QM W Au,

v this onrrnn STATES PATENT OFFICE.

' HARRY B. NaYLoR, or PITTSBURGH, PENNSIILVQANIA, Assrenon TO NATIONAL FIRE IPBOOE'ING COMPANY, OF PITTSBURGH, PENNfiYLVANIA, A CORPORATION OF PENN 'SYLVANIA.

CYLINDRICAL HOLLOW-TILE STRUCTURE AND BLOCKS THEREFOR. i

Specification of Letters Patent.

Patented July 13, 1915.

Application filed November 15, 1912. Serial No. 731,635.

To all 107mm it may concern Be it known'that I, HARRY B. NAYLOR, a resident of Pittsburgh, in the countyof Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Cylindrical Hollow-Tile Structures and Blocks Therefor, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a transverse section through one form of silo built in accordance with my invention. Fig. 2 is a perspectiveview of a portion of another form of structure. Fig. 3 is a sectional plan View of a portion of a silo on a larger scale on the line IV-IV of Fig. 5.. Fig. at isa front view of a portion of a silo on an enlarged scale, and Fig. 5 is a sectional view on the line VIVI of Fig. 3.

My invention relates to the forming of arched structures, such as silos, grain bins, tanks, sewers, etc. of hollow burned tile blocks.

The object of the invention is to provide a simple, strong, efficient structure of this character which is formed of inner and outer courses which interfit with each other, each course being formed of hollow burned tiles which may be shaped in a tile machine in the usuali'manner and then burned. There is preferably a continuous mortar joint between the inner and outer courses,'the ra dial joints in each course extending to the continuous mortar oint between the courses, compound structure having great strength against internal bursting strains or external pressures. The outer tiles being on a greater circle are longer than the inner tiles,'and the outer faces of the inner tiles are provided with outwardly flaring recesses to receive the interfitting tapered end portions of two adjacenttiles, thus giving the irregular continuous mortar joint between the tiles. A reinforce may be used in the structure, if desired, as hereinafter set forth.

In the drawings, in which I show a silo constructed in accordancev with my invention, 3 designates the door tiles used to form the 'door opening for 2L. silo. These door tiles preferably extend across the width of W shearing between the\inner both the inner and outer courses indicated in Fig. 1.

4 designates the tiles of the outer courseand 9 the tiles of the inner course, each having at each end inwardly extending projections which are'hollow or provided with a cavity or cavities. These projections 5 of the outer tiles fit within the recessed outer faces of the inner tiles 9, the inner tiles be- 'at the top and bottom ends, and at the sides. As the courses are laid, a continuous irregular mortar joint 7 is formed between the inner and outer courses and the meeting interfitting faces are preferably provided with recesses 6.:sl'lown as dove-tailed, which the mortar willenter. This mortar in the registering pockets will aid in preventing and outer courses and strengthen the courses.

, In the form shown in Figs. 1 and 3, the outer walls of the outer tiles are provided in their upper'portions with recesses or grooves 8 for the reception of reinforcing rods 10 extending around the structure; the blocks 9 of the inner course not having such recesses. This reinforce is preferably embedded in cement and the ends of the rods are preferably connected to short lengths 11 which'project through the outer tiles and are provided with eyes for the reception of for designating the several parts with the letter a afliXed. 7

The advantages of my invention will it obvious to those skilled in the art, since a strong relatively light interlocking cellm lar structure of burned tiles of arch-form is provided which is of great strength against internal and external strains or pr sures. The angular walls at the'sides of the recesses form diagonal bracesfor the tiles. from a machine and cut off in the usual man lie and then burned and being of cellular web-form are light and stron .The continuous irregular locking joint between the inner and outer courses bind them together and this is aidedby the mortar pockets where such are used. The radial joints in each course extend only to the intermediate tween the inner and outer courses, the radial irregular continuous mortar joint and the oints in the two courses are preferably broken both at the tops and bottoms and the sides.

The structure is of special advantage in sewer construction and may be built either as a complete cylinder or as parts of a cylinder to be fitted together. The invention appli-able to any arched structure arranged to receive internal or external strains.

The shape of the blocks may be varied, a number of inner and outer courses may be changed, the reinforce may be used or not, as desired, and other changes may be made without departing from my invention.

I claim:

1. An arch-shaped structure formed of joints between the tiles in one course being staggered with respect to the radiah joints between the tiles of the other course, said joints extei'iding from the inner and outer surfaces of the wall to said intermediate continuous joint, substantially as described.

2. An arch-shaped structure formed of inner and outer courses of burnt tiles hav- The tile blocks may be {SXpljBSSt-LCl ing cavities extending longitudinally of the structure, the outer tiles being wider than the inner tiles along the circumference, the tiles of both courses having projections forming central outwardly flaring recesses on one face of each tile, the thickness of said tiles being small in comparison to their width along the circumference, the recesses in the tiles of each course receiving the end projections of two tiles of the other course, with an irregular continuous intermediate mortar joint between the inner and outer courses, the radial joints between the tiles in one course being staggered with respect to the radial oints between the tiles of the other course and extending from the inner and outer surfaces tosaid intermediate continuous oint, the end projections of the tiles having longitudinalcavities of generally triangular-polygonal shape, substantially as described.

3. Tiles for constructing a multiplecourse interlocked arch-structin'e, each tile being of generally arch shape with substantially radial side faces, and having an outwardly flaring recess on one face formed by projections having longitudinal through cavities of generally triangular-polygonal form, the thickness of the tile being small in comparison with its other (.llIIXBIISlOIIS, said tile also having a through cavity between the bottom of the recess and'the opposite face of the tile, each of said tiles being adapted to receive within its recess the adjacent projections of tiles of the other course. so that a continuous irregular in- .tern'iediate mortar joint maybe formed be tween the inner and outercourses with the radial olnts between the tiles in one course staggered with respect to those between the tiles 0! the other course and extending from the inner and outer surfaces to said intermediate continuous joint, substantially as described.

In testimony whereof, I have hereunto set my hand,

, HARRY B. NAYLOR Witnesses: v

S. D. EnnMAN, Gno. R. Ronni. 

